39152921890 has 32 divisors (see below), whose sum is σ = 71235957744. Its totient is φ = 15492280320.

The previous prime is 39152921879. The next prime is 39152921963. The reversal of 39152921890 is 9812925193.

It can be written as a sum of positive squares in 8 ways, for example, as 26270898889 + 12882023001 = 162083^2 + 113499^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2297200 + ... + 2314180.

Almost surely, 2^39152921890 is an apocalyptic number.

39152921890 is a deficient number, since it is larger than the sum of its proper divisors (32083035854).

39152921890 is a wasteful number, since it uses less digits than its factorization.

39152921890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19462.

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 39152921890 in words is "thirty-nine billion, one hundred fifty-two million, nine hundred twenty-one thousand, eight hundred ninety".